Another go around - courtesy of @rene to which I have made some minor adjustments (runs a timeline).
I think this is an elegant solution in general - not sure if it will apply to your precise circumstances.
Unlike so many attempts for a fix to this issue, the Javascript is minimal.
Rene's original thread:
My Demo here. Resize the window - this is a timeline drag - pretty clean!
My Demo Hype project: Drag_Sync.hype.zip (17.5 KB)